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Why doesn't Git ignore my specified file?
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Make sure that your .gitignore is in the root of the working directory, and in that directory run git status and copy the path to the file from the status output and paste it into the .gitignore.
If that doesn’t work, then it’s likely that your file is already ...
深入浅出计算机字符集编码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...字、标点、图形符号、数字等。这个集合叫做字符集；
如何进行存储。规定字符集中的每个字符分别用一个字节还是多个字节存储，用哪些字节来存储，这个规定叫做编码。
charset ，字符集，也就是某个符号和某个数字映...
Does application.yml support environment variables?
...ing kotlin, you need to put your reference in quotes & escape the $ eg root: "\${LOGGING_LEVEL_ROOT:info}"
– Edward
Feb 11 '19 at 12:57
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How to set Java environment path in Ubuntu
.../man/man1/java.1.gz
Now dig deeper-
$ ls -l /usr/bin/java
lrwxrwxrwx 1 root root 46 Aug 25 2018 /etc/alternatives/java -> /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
Dig deeper:
$ ls -l /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
-rwxr-xr-x 1 root root 6464 Mar 14 18:28 /usr/lib/jvm...
Cron and virtualenv
... SHELL environment variable to be /bin/bash:
SHELL=/bin/bash
*/10 * * * * root source /path/to/virtualenv/bin/activate && /path/to/build/manage.py some_command > /dev/null
It's tricky to spot why this fails as /var/log/syslog doesn't log the error details. Best to alias yourself to ro...
MFC OnEraseBkgnd浅析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...完成之前，windows已把视频卡的缓存输出到屏幕上了。
如何擦除之前的背景图片？
我明白问题所在了，你的问题是当窗口大小变化时，原来的背景没有被清除，造成图片重叠显示，你上面的代码没有问题，写在OnEraseBkgnd()中还...
Is there a way to change the environment variables of another process in Unix?
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Substantially, no. If you had sufficient privileges (root, or thereabouts) and poked around /dev/kmem (kernel memory), and you made changes to the process's environment, and if the process actually re-referenced the environment variable afterwards (that is, the process had not ...
Converting an array of objects to ActiveRecord::Relation
...l as sorting them with a specific column(id for instance). Since I'm using MySQL, the field function could be helpful.
MyModel.where('id in (?)',ids).order("field(id,#{ids.join(",")})")
The SQL looks like:
SELECT ... FROM ... WHERE (id in (11,5,6,7,8,9,10))
ORDER BY field(id,11,5,6,7,8,9,10)
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How to npm install to a specified directory?
...ix}. What I also aim is to be able to let the packages.json in the project root and in the same time install all packages in {project root}/{project webroot}.
– automatix
Feb 22 '16 at 10:38
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Git error: “Host Key Verification Failed” when connecting to remote repository
...sts file to be known_hosts.old, and create a copy that is only readable by root. (-rw------- root root) You can easily chown this back to the appropriate user, but you also might waste an afternoon debugging why git is broken. :D
– Andrew Rueckert
Feb 28 at 23:...